#!/usr/bin/python

def main():
	x1, x2, x3 = input("Please input three values:")
	if x1>x2 and x1>x3:
		max = x1
		print "max is:", max
	elif x2>x1 and x2>x3:
		max = x2
		print "max is:", max
	else:
		max = x3
		print "max is:", max
main()
